31110032103 has 4 divisors (see below), whose sum is σ = 41480042808. Its totient is φ = 20740021400.

The previous prime is 31110032099. The next prime is 31110032131. The reversal of 31110032103 is 30123001113.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 31110032103 - 2² = 31110032099 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31110032183) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5185005348 + ... + 5185005353.

It is an arithmetic number, because the mean of its divisors is an integer number (10370010702).

Almost surely, 2^31110032103 is an apocalyptic number.

31110032103 is a deficient number, since it is larger than the sum of its proper divisors (10370010705).

31110032103 is a wasteful number, since it uses less digits than its factorization.

31110032103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10370010704.

The product of its (nonzero) digits is 54, while the sum is 15.

Adding to 31110032103 its reverse (30123001113), we get a palindrome (61233033216).

The spelling of 31110032103 in words is "thirty-one billion, one hundred ten million, thirty-two thousand, one hundred three".